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SUBSEQUENT EVENTS (Details) - USD ($)
$ in Millions
3 Months Ended
Aug. 20, 2018
Jul. 28, 2018
Jul. 29, 2017
Subsequent Event [Line Items]      
Document Period End Date   Jul. 28, 2018  
Payment Terms - Max   45 days  
Payments to Acquire Businesses, Net of Cash Acquired   $ 0.0 $ 22.2
Restricted Stock [Member] | Two Thousand Fourteen Stock Plan      
Subsequent Event [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, EBITDA Goal, Percentage of Likelihood   70.00%  
Subsequent Event [Member] | Grakon [Member]      
Subsequent Event [Line Items]      
Percentage acquired 100.00%    
Payments to Acquire Businesses, Net of Cash Acquired $ 420.0    
Business Combination, Cash on Hand Used to Fund Acquisition 140.0    
Subsequent Event [Member] | Line of Credit [Member] | Grakon [Member]      
Subsequent Event [Line Items]      
Maximum principal amount 250.0    
Subsequent Event [Member] | Revolving Credit Facility [Member] | Grakon [Member]      
Subsequent Event [Line Items]      
Maximum principal amount $ 200.0    
Subsequent Event [Member] | Minimum [Member] | Grakon [Member]      
Subsequent Event [Line Items]      
Basis spread on variable rate 1.25%    
Subsequent Event [Member] | Maximum [Member] | Grakon [Member]      
Subsequent Event [Line Items]      
Basis spread on variable rate 2.00%    
Subsequent Event [Member] | London Interbank Offered Rate (LIBOR) [Member] | Grakon [Member]      
Subsequent Event [Line Items]      
Variable rate basis LIBOR